Hello Josh - I'll take a stab at your questions. 1). AVO was formed in 1988. Prior to AVO's formation, there were two seismic stations at Redoubt. When AVO was formed, instrumenting Redoubt was a high priority because of its eruptive frequency and proximity to Anchorage. So three more stations were added in October, 1989. 2). The webicorder plots actually come from VALVE - and likely we could give users more than just a .jpg, but it would be incredibly taxing to our servers and limited bandwidth. All of our seismic data is publicly available in near-real-time at IRIS, however - so you could download it from there and use your own tools for visualization and analysis. 3). Sadly, no, the public lectures aren't able to be streamed online. Judy Fierstein's April talk on Novarupta 1912 is available here, however: https://www.avo.alaska.edu/Katmai2012/videos.php Thanks for your interest! -Cheryl -------- Josh Ridderhoff wrote: Hello, I just finished reading through the report on the 2009 Redoubt eruption, and a couple of questions came up for me that I was hoping someone might be able to shed some light on. Nothing earth-shattering, just curiosities mainly: 1) It was mentioned that seismic monitoring equipment had been installed at Redoubt just a few months prior to the '89 eruption, but also that there wasn't any notable seismic activity until about 24 hours prior to the eruption. Was it just an incredible coincidence that the monitoring stations happened to get installed when they did, or had there been other clues going on that indicated there might be an imminent need for seismic monitoring? 2) Reading about SWARM, it sounds fairly plausible that it's this software that generates the webicorder images. Is that the case? If so, I noticed that SWARM allows for the user to zoom, filter, etc. on individual waveforms to get more detail, and I was curious to see if anybody has ever looked at expanding some similar functionality to the webicorder displays to give web users the ability to get better resolution for events of interest? Thanks for the time! P.S. -- I'm assuming not, but do you know if any of the public lectures this summer are streamed/recorded and available online? It's a tad cost-prohibitive to jet up to Anchorage from Utah for a day, but I sure wish I could be there to see a few of them (this week's especially sounds amazing)! Best, -Josh Ridderhoff Roy, Utah -- Cheryl Cameron Geologist, Alaska Volcano Observatory Alaska Division of Geological & Geophysical Surveys voice: 907-451-5012 fax: 907-451-5050